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Finding the Third Proportional to 15,424 and 33,878

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Solution

The third proportional to 15,424 and 33,878 is: 74,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424 : 33,878 = 33,878 : x
  2. Step 2: Convert to fraction form
    15,424/33,878 = 33,878/x
  3. Step 3: Cross multiply
    15,424x = 33,878 × 33,878
  4. Step 4: Simplify right side
    15,424x = 1,147,718,884
  5. Step 5: Solve for x
    x = 1,147,718,884/15,424
  6. Step 6: Final answer
    x = 74,411.23

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.